Table 1:

Patient demographics

Characteristic	Institutional Cohort
	Stanford	Boston	Toronto
No. of patients	32	28	49
Age (mean) (yr)	10.14 ± 8.49	8.54 ± 4.52	7.53 ± 3.69
Male sex (No.) (%)	23 (72)	9 (32)	32 (65)
Molecular subgroup (No.)
SHH	11	9	10
WNT	4	5	10
Group 3	7	5	12
Group 4	10	9	17
MRI availability (No.)
3T	5	0	1
1.5T	27	28	48
T1-weighted	32	26	48
2D T1-weighted	28	25	7
3D T1-weighted	4	1	41
T2-weighted	30	27	29
T1- and T2-weighted	30	25	27